__STM32F4xx_HAL_DMA_EX_H macro

@file stm32f4xx_hal_dma_ex.h @author MCD Application Team Header file of DMA HAL extension module. @attention Copyright (c) 2017 STMicroelectronics. All rights reserved. This software is licensed under terms that can be found in the LICENSE file in the root directory of this software component. If no LICENSE file comes with this software, it is provided AS-IS.